And alfred m



I(No Model.)

' T. S.. SMITH 8v A. M. SHEPARD.

STEAM TRAP.

Patented Deo. 18,1894.

. moro-mio.. wnsxNeTN o c separated from the discharge chamber-2 by a lof the discharge chamber if).4 Interposed be- NITED STATES THOMAS S. SMITH, OE EAST Sr. LOUIS, ILLINOIS, AND ALFRED M. SHEPARD,

PATENT EFICE OE ST. Louis, MISSOURI.

STEAM SPECIFICATION forming part of Letters Patent No. 531,139,dated December 18, 1894.

v Application filed August 18x94. Serial No. 520,119. (No model.)

To all whom t may concern: j

Be it known that we, THOMAS S. SMITH, of East St. Louis, county of StfClair, State of Illinois, and ALFRED M. SHEPARD, of the city of St.Louis, State of Missouri, have invented cer. tain new and useful Improvements in Steam- Traps, of which the following is a full, clear', and exact description, reference being had to the accompanying drawings, forming a part hereof.

Our invention has relation to improvements in steamtraps and consists in the novel arrangement and combination of parts more fully set forth in the specification and pointed out in the claims.

In the drawings, Figure 1 is a middle vertical section of the device, and Fig. 2 is a similar section of amodiied form.

The object of our invention is to construct a steam-trap to be placed either in the path of, or at the end of a heating system which will at intervals automatically and effectively discharge the waters of condensation accumulated therein; one whose parts shall be sensitive and Vresponsive to lthe conditionsy designed to operate them; one that shall be certain in its actions, cheap and durable, and susceptible of easy attachment to existing heating systems.

To this end ourinvention consists of a trap which in detail can be described as follows:

Referring to the drawings, 1 represents the receiving chamber of the trap, the same being wall or plate 3, the two chambers being secured to the opposite sides of the plate 3 by bolts and nuts 4 as best seen in Fig. 1. The receiving chamber has an inlet opening for the end of the pipe 5 of the heating system. Extending upward from near the bottom of the chamber 1 is the short leg of the siphon 6, whose long leg passes through an opening in the plate 3 and terminates near the bottom tween the long leg of the siphon and the walls of the discharge chamber 2 is a float 7 pivotally secured to an arm 8 whose free V end carries a valve 9 controlling the outlet opening 10 of the discharge pipe.11. A suitable elastic band or spring 12 guided preferably between flanges 13 and whose ends are secured to the valve, keeps the latter in close contact with the outer surface of the pipe whose opening it controls.

From the plate 3, and in communication with the two chambers and immediately over the doat 7 extends upwardly into the receiving chamber an equalizing pipe 14 of sufficient inner diameter to admit of the free oscillation of the stem 15, the upper endof which carries a perforated conical valve 16 adapted to close the reduced opening at the .upper end or cap of the equalizing pipe. The lower p rojecting end of the stem 15 carries a striking .disk 17 of suitable curvature against which the'ioat is adapted ,to strike.

The 'operation of the trap may be described as follows: As the waters of condensation dow into the receiving chamber 1 from the pipe 5, they gradually ll said chamber to the point of overflow ofthe Siphon as indicated in Fig. 1, said water dowing into the chamber 2 and gradually filling the same and lifting the float 7 until it has moved. the valve 9 sufficiently past the opening 10 to open the latter. This opening of the valve 9 results in the reduction of steam pressureinsaid chamber 2 ;'but at the same time thek fioat 7 too has come in contact with the disk 17 and raised it sufficiently to push the stem 15 upward and allowing its valve 16 to close the opening at the top cess of pressure in the chamber 1 will force the water from the same through the Siphon into the chamber 2, and thence through the opening 10 of the discharge pipe 11, completely flushing the two chambers of their water contents. The iioat then resumes its normal position, the opening 10 is closed, the stern 15 drops toits original position, communication between the two chambers is' restored, and the parts are allin position to repeat the previous operation. p

Where the trap is placed inthe path of a system instead of at the terminal thereof, we substitutea modified form for the receiving chamber in the shape of a section 2O shown in Fig. 2, the steam passing into the opening 21 and out through the opening 22, any water IOO of condensation running downward along the deliecting plates 23 and 24, to the bottomwofy the section, the remaining parts being identical with those shown in Fig 1, and already described in detail. These deiecting plates prevent the water from rising and being carried" forward by the passing steam `in l its fiow` through the system. l;

The receiving chamber forms a receptacle for dirt, grit, and other foreign substances, and prevents the same from coming in contact with or otherwise damaging the workingA valves. It also becomes a cooling basin" wherein the water by degrees loses its caloricl and when cooled can be run directly 1 interaL sewer without damage to the latter.

Having described our invention, what we, claim isf 1. A steam trap comprising two contiguous, chambers an equalizing pipe between said, chambers, a siphon communication betweenj the two chambers, and a valve inone of the:` chambers controlled by the proportionate` amount of discharge by the siphon, substantially as set forth.

2. A steam trap comprising a receiving chamber and a discharge chamberanequalizing pipe between the chambers, a Siphon establishing communication ybetween the chambers, a valve-controlled openingxini the discharge chamber, a float operating said valve in proportion to the amount discharged. by the siphon into said discharge chamber,` substantially as set forth.

3. A steam trap comprising a receiving chamber and a discharge chamber, au equalizing pipe establishing communication between the chambers, a siphon adapted to con- Vey water from one chamber tothe other, -a valve-controlled discharge opening in thefdischarge chamber, a float operating said valve `and controlling the opening in the equalizing pipe, substantially as set forth.

4:. A steam trap comprising a receiving chamber and a discharge chamber, an equalizing pipe establishing communication betweenthe chambers,a stem in said pipe car- Qryinga valve, a disk on the lower end of said stem in the discharge chamber, a siphon for discharging water from the receiving into the discharge chamber, a Valve-controlled discharge opening in the discharge chamber, a lioat operating said valve and adapted to strike the disk on the stem and force the valve thereon to its vseatand close the equalizing pipe, substantially as set forth.

5. A steam trap comprising a receiving chamber havinga suitableinlet, a discharge chamber locatedbelow the same, a` plate separating the said chamberaa Siphon establishing communication between the chambers, an equalizing pipe betweent the Ltwo chambers, a stem operating within the pipe,a valveon top of. said stem, a striking disk at the lower end Yof thestem located in the dischargechamber,

a float in the discharge chamber located below the stem, an arm pivotally secured to the ioat,

a valve at the free end of thearm, a discharge pipe having an openingcontrolledby said `valve leading from the discharge chamber, 

